spark plugs on 2005 Chevrolet Aveo

I did a tune up on my car i saw that motor oil is going to my spark plugs how do i repair this problem.

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7 answers
where is number 1 spark plug on moter
valve cover gasket
I had the same issue. Replace valve cover gasket. and you will be good to go.
This is likely from a leaking valve cover gasket.
YES WAS OIL ON THE FOUR PLUGS
Sounds like you're spilling the oil when filling and it's dripping down into the park plug tube
what is 1st plug